Is CVE-2020-28021 actively exploited?

CVE-2020-28021 has no public evidence of in-the-wild exploitation as of 2024-11-21.

What is the CVSS score for CVE-2020-28021?

CVE-2020-28021 has a CVSS score of 8.8 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2020-28021?

Patch guidance is available from exim security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2020-28021.

Fix CVE-2020-28021 - HIGH exim exim

Description

Exim 4 before 4.94.2 has Improper Neutralization of Line Delimiters. An authenticated remote SMTP client can insert newline characters into a spool file (which indirectly leads to remote code execution as root) via AUTH= in a MAIL FROM command.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: NVD-CWE-Other

Metadata

Primary Vendor: EXIM
Published: 5/6/2021
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2020-28021

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary